JP7434874B2 - ventilation system - Google Patents

Description

The present disclosure relates to ventilation systems.

Patent Document 1 describes a technology for obtaining quality sleep that, after starting cooling operation in sleep mode, when the temperature of the outside air falls below a predetermined set value, the cooling is stopped and the windows are opened to turn on the outside air. Techniques have been disclosed for bringing indoors.

Japanese Patent Application Publication No. 4-240344

The temperature of the outside air at night in summer does not necessarily fall below the above-mentioned set value. In the technique of Patent Document 1, for example, if the temperature of the outside air at night does not fall below the set value, the window opening/closing device does not operate, so ventilation is not performed during sleep. The technique of Patent Document 1 has a problem in that it is greatly affected by the outside temperature, and it is not always possible to get good quality sleep.

The present disclosure has been made to solve the above-mentioned problems, and aims to provide a ventilation system that is advantageous for obtaining quality sleep.

The ventilation system according to the present disclosure includes a ventilation means capable of taking outside air into a room, a carbon dioxide concentration detection means for detecting a carbon dioxide concentration in the room, and a ventilation system according to the carbon dioxide concentration detected by the carbon dioxide concentration detection means. and control means for controlling the means. The control means is configured to control the carbon dioxide concentration in the room when the user who has entered the room goes to bed to be equal to or higher than the first concentration and lower than the upper limit concentration, and to control the carbon dioxide concentration in the room when the user sleeps after going to bed. The ventilation means is controlled so that the concentration is equal to or lower than a second concentration, which is lower than the first concentration.

According to the present disclosure, it is possible to provide a ventilation system that is advantageous for obtaining quality sleep.

1 is a diagram schematically showing the configuration of a house including a room to which a ventilation system according to Embodiment 1 is applied. FIG. 1 is a block diagram showing the configuration of a control system of a ventilation system according to Embodiment 1. FIG. FIG. 3 is a diagram showing an example of control of room temperature and carbon dioxide concentration from when the user starts sleeping until when the user wakes up. 7 is a diagram illustrating a modification of a house including a room to which the ventilation system according to Embodiment 1 is applied. FIG.

Embodiments will be described below with reference to the drawings. In each figure, common or corresponding elements are given the same reference numerals, and overlapping explanations will be simplified or omitted as appropriate. In each figure, common or corresponding parts are given the same reference numerals, and overlapping explanations will be simplified or omitted as appropriate. Note that the present disclosure is not limited to the following embodiments, and can be variously modified without departing from the spirit thereof.

Embodiment 1.
FIG. 1 is a diagram schematically showing the configuration of a house 1 including a room to which a ventilation system according to Embodiment 1 is applied. In the example shown in FIG. 1, the house 1 is a detached house having a first floor 10 and a second floor 20. A first floor room 11 is provided on the first floor 10. A second floor room 21 is provided on the second floor 20. Specifically, in the embodiment shown in FIG. 1, a common space, a Japanese-style room, and an LDK (living room, dining room, and kitchen) are provided as rooms 11 on the first floor. Furthermore, a common space, a bedroom 22, and two children's rooms are provided as rooms 21 on the second floor.

The ventilation system according to this embodiment is applied to a room where a user is expected to sleep. In the example shown in FIG. 1, the ventilation system is applied to the bedroom 22. A user of the ventilation system can sleep on a bed in the room 23 of the bedroom 22 or on bedding such as a futon spread on the floor. Note that the ventilation system according to the present embodiment is also applicable to rooms other than the bedroom 22 where users are expected to sleep, such as children's rooms. In the present embodiment, a ventilation system applied to the bedroom 22 will be described below as an example.

The ventilation system according to this embodiment includes a ventilation device 50 provided in the house 1. The ventilation device 50 is for introducing outside air, which is air outside the house 1, into each of the rooms 11 on the first floor and the rooms 21 on the second floor that are to be ventilated. In this embodiment, the ventilation device 50 is configured to be able to take in outside air particularly into the room 23 of the bedroom 22 . The ventilation device 50 in this embodiment is an example of ventilation means according to the present disclosure.

The ventilation device 50 includes a ventilation device main body 51 and a branch pipe 60. The ventilation device main body 51 has a hollow box shape. The ventilation device main body 51 is installed, for example, in the ceiling of the first floor 10.

An outside air inlet 30 is formed in the house 1. The outside air inlet 30 is an opening for taking in outdoor air, that is, outside air. Indoor air supply ports 70 are formed in the room 11 on the first floor and the room 21 on the second floor. The indoor air supply port 70 is an opening for supplying outdoor air taken in by the outside air introduction port 30 to an indoor space such as the indoor room 23 . The indoor air supply port 70 is provided, for example, on the ceiling of each room.

In the embodiment shown in FIG. 1, one indoor air supply port 70 is provided in the Japanese-style room 11 on the first floor, and two indoor air supply ports 70 are provided in the LDK. Furthermore, in the room 21 on the second floor, one indoor air supply port 70 is provided in each of the bedroom and two children's rooms. Note that the indoor air supply ports 70 do not necessarily need to be formed in all indoor rooms as described above. Moreover, two or more indoor air supply ports 70 may be formed in one room. The indoor air supply port 70 may be provided as long as it can ventilate the room to which the ventilation system according to the present embodiment is applied.

One end side of the ventilation device main body 51 communicates with the outside air introduction port 30. One end of a branch pipe 60 is connected to the other end side of the ventilation device main body 51. The branch pipe 60 is a hollow cylindrical pipe. The branch pipe 60 is a pipe for conveying outdoor air taken in from the outside air introduction port 30 to each of the indoor air supply ports 70. The branch pipe 60 constitutes an air path for ventilating the interior of the house 1.

The other end side of the branch pipe 60 branches and communicates with each of the plurality of indoor air supply ports 70 . Specifically, the branch pipe 60 branches into a first floor 10 side and a second floor 20 side at a branch part 61. The branch piping 60 branched to the first floor 10 side communicates with the indoor air supply ports 70 of the rooms 11 on the first floor. Further, the branch piping 60 branched to the second floor 20 side communicates with the indoor air supply ports 70 of each of the rooms 21 on the second floor.

An indoor air supply amount adjusting section 71 is provided at a portion of the branch pipe 60 that communicates with each indoor air supply port 70 . The indoor air supply amount adjusting units 71 are provided in the same number as the indoor air supply ports 70 and correspond to the indoor air supply ports 70 on a one-to-one basis. The indoor air supply amount adjustment unit 71 includes, for example, a damper, a valve, etc., and can individually change the amount of air supplied indoors from each of the indoor air supply ports 70. The indoor air supply amount adjustment unit 71 in this embodiment is an example of an air supply amount changing unit that can individually change the amount of air supplied indoors from each of the plurality of indoor air supply ports 70.

Further, the ventilation device main body 51 is provided with a blower fan 52 and an air purification section 53. The blower fan 52 generates an air flow in the branch pipe 60 from the outside air inlet 30 toward the indoor air supply port 70 .

The air purification unit 53 purifies the outdoor air taken in from the outside air introduction port 30. The air purification unit 53 includes, for example, a filter, an electric device, and the like. The filter used includes, for example, functions such as dust collection, deodorization, gas removal, and antibacterial treatment. Electrical devices used include those that inactivate bacteria and allergens by irradiation or discharge of ultraviolet rays, or those that have a function of decomposing gas components.

The house 1 is provided with a ventilation fan 41 and a range hood 42, for example. In the embodiment shown in FIG. 1, the ventilation fan 41 is provided on the outer wall between the common space of the room 11 on the first floor and the outdoors. Further, the range hood 42 is provided in the LDK of the room 11 on the first floor, particularly on the outer wall between the kitchen and the outdoors. The ventilation fan 41 and the range hood 42 are exhaust means for exhausting indoor air to the outdoors. As described above, in the embodiment shown in FIG. 1, the ventilation system is designed to perform first-class ventilation in which both air supply and exhaust are forced. However, the exhaust means does not need to be one that performs forced exhaust, and may be one that performs natural exhaust. That is, the ventilation system may be configured to perform type 2 ventilation.

Further, the ventilation system according to the present embodiment includes an air conditioner 80 as an example of an air conditioning means for controlling the temperature of the room. In this embodiment, air conditioner 80 is installed in bedroom 22. The air conditioner 80 installed in the bedroom 22 controls the temperature of the room 23 of the bedroom 22 . The air conditioner 80 includes an indoor unit and an outdoor unit connected to the indoor unit via refrigerant piping. Note that illustration of the refrigerant piping and the outdoor unit is omitted. In this embodiment, air conditioner 80 is capable of at least performing cooling operation. The air conditioner 80 may be able to further perform air conditioning operations other than cooling operation, such as heating operation and dehumidification operation.

As shown in FIG. 1, an indoor sensor unit 90 is installed in the bedroom 22. The indoor sensor unit 90 has a sensor that can measure the carbon dioxide concentration in the air. The indoor sensor unit 90 in this embodiment constitutes an example of a carbon dioxide concentration detection means for detecting the carbon dioxide concentration in the room 23. In the following description, the carbon dioxide concentration in the air in the room 23 is also simply referred to as "carbon dioxide concentration." The ventilation device 50 included in the ventilation system according to the present embodiment is characterized in that it operates according to the carbon dioxide concentration detected by the indoor sensor unit 90. A more detailed explanation of the operation of ventilator 50 will be provided below.

In the embodiment shown in FIG. 1, the indoor sensor unit 90 is installed on the wall of the bedroom 22. The indoor sensor unit 90 may be installed on the ceiling or floor of the bedroom 22. Indoor sensor unit 90 may be provided in ventilation system 50 or air conditioner 80. The indoor sensor unit 90 only needs to be configured to be able to detect the carbon dioxide concentration in the room 23. Moreover, the indoor sensor unit 90 may be installed in a room other than the bedroom 22, as shown in FIG.

The indoor sensor unit 90 may be configured to be able to detect the temperature and humidity of the room 23. In the following description, the temperature in the room 23 will also be referred to as "room temperature." As an example, the air conditioner 80 performs air conditioning operation according to the room temperature and humidity detected by the indoor sensor unit 90. Note that the detection of room temperature and humidity may be performed by a device different from the indoor sensor unit 90 that detects carbon dioxide concentration.

Moreover, in this embodiment, the indoor sensor unit 90 is configured to be able to detect the state of the user in the room 23 without contact. The ventilation device 50 included in the ventilation system according to the embodiment is characterized in that it operates according to the user's condition detected by the indoor sensor unit 90.

The indoor sensor unit 90 includes, for example, a surface temperature sensor that detects the surface temperature of an object in a non-contact manner. According to the surface temperature sensor, the surface temperature of the user and other objects in the room 23 can be detected and the temperature distribution can be mapped. By using the surface temperature sensor, it is possible to determine whether there is a user in the room 23 or not. Further, when a user is present in the room 23, the position of the user can be detected by using the surface temperature sensor 16.

The indoor sensor unit 90, which can detect the position of the user, can detect when the user goes to bed. The indoor sensor unit 90 in this embodiment constitutes an example of a bed detection means according to the present disclosure.

Note that the detection of when the user goes to bed is performed using a device other than the indoor sensor unit 90, such as a camera that captures an actual image, a human sensor such as an ultrasonic sensor, a sensor installed in bedding, or a wearable sensor. It may be done by.

It is particularly desirable that the surface temperature sensor included in the indoor sensor unit 90 be a diode-type highly sensitive infrared sensor that can detect the user's body movements in a non-contact manner. Highly sensitive diode-based infrared sensors can detect human movements with high precision. A diode-based highly sensitive infrared sensor can detect with high precision whether the user turns over in bed, which is one measure of sleep state.

The indoor sensor unit 90 that can detect the user's body movements can detect the sleeping state of the user. Specifically, the indoor sensor unit 90 can detect when the user falls asleep after going to bed. Indoor sensor unit 90 in this embodiment constitutes an example of sleep onset detection means according to the present disclosure. Moreover, the indoor sensor unit 90 can detect the sleep state of the user after falling asleep, for example, the depth of the user's sleep.

Note that the sleeping state of the user is detected using an indoor sensor unit 90 such as a camera that captures a real image, an electroencephalogram sensor, a pressure sensor installed in bedding, a smartphone equipped with a wearable sensor, or an acceleration sensor. It may also be performed by another device. The carbon dioxide concentration detection means, bedtime detection means, and sleep onset detection means according to the present disclosure may be configured by one device such as the indoor sensor unit 90, or may be configured as separate devices.

Moreover, as shown in FIG. 1, an outdoor sensor unit 91 may be installed in the house 1. The outdoor sensor unit 91 is an example of an outside temperature detection means that detects outside temperature. The ventilation device 50 and the air conditioner 80 included in the ventilation system according to the present embodiment may operate according to the outside temperature detected by the outdoor sensor unit 91.

FIG. 2 is a block diagram showing the configuration of a control system of the ventilation system according to the first embodiment. The ventilation system according to this embodiment includes a system control section 100 as an example of a control means. The system control unit 100 includes a control circuit and the like for implementing various controls necessary for operation of the ventilation system.

Information on the detection results of the indoor sensor unit 90 is input to the system control unit 100 . The system control unit 100 controls the ventilation device 50 according to the detection result of the indoor sensor unit 90. Specifically, the system control unit 100 controls the operations of the ventilation fan 52 and the indoor air supply amount adjustment unit 71.

Information on the detection results of the outdoor sensor unit 91 is also input to the system control unit 100 . The system control unit 100 controls the ventilation fan 52 of the ventilation device 50 and the indoor air supply amount adjustment unit 71 according to the detection result of the outdoor sensor unit 91. Further, the system control unit 100 may control the air conditioner 80 according to the detection result of the outdoor sensor unit 91. In the present embodiment, the system control unit 100 may cause the ventilation device 50 and the air conditioner 80 to operate in conjunction with each other depending on the outside temperature detected by the outdoor sensor unit 91.

The system control unit 100 may be connected to an external network 101 such as the Internet, for example. The system control unit 100 may acquire information on outside temperature via the external network 101.

Further, the system control unit 100 may be connected to a terminal device including a display unit 111 and an operation unit 112 so as to be able to communicate in both directions. The terminal device 110 is, for example, a personal computer, a smartphone, a tablet terminal, or the like. The display unit 111 is a liquid crystal display or the like that displays various information. When the terminal device 110 is a personal computer, the operation unit 112 is an input device such as a pointing device and a keyboard of the personal computer. Further, when the terminal device 110 is a smartphone, the terminal device 110 includes a touch panel that serves as an operation section 112 and a display section 111. Using the terminal device 110, the user can operate the ventilation system and check the status of the ventilation system. Note that the means for operating the ventilation system is not limited to the operating section of the terminal device 110, and for example, a dedicated operating device may be provided. Similarly, a dedicated display device may be provided for displaying the status of the ventilation system.

The functions of the system control unit 100 can be realized by a processing circuit. The processing circuit of the control unit may include at least one processor and at least one memory. When the processing circuit includes at least one processor and at least one memory, each function of the control unit may be realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware may be written as a program. At least one of the software and firmware may be stored in at least one memory. The at least one processor may implement each function of the control unit by reading and executing a program stored in at least one memory. The at least one memory may include nonvolatile or volatile semiconductor memory, magnetic disks, and the like.

The processing circuitry of the control unit may include at least one dedicated hardware. When the processing circuit comprises at least one dedicated hardware, the processing circuit may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit (ASIC), a field-specific integrated circuit (FPGA), etc. Programmable Gate Array) or a combination thereof. Regarding each function of the control unit, some may be realized by dedicated hardware, and other parts may be realized by software or firmware. The processing circuit may implement each function of the control unit using hardware, software, firmware, or a combination thereof.

The ventilation system according to this embodiment is characterized by improving the sleep efficiency of the user by controlling the carbon dioxide concentration in the room 23. Further, the ventilation system according to the present embodiment controls room temperature in addition to carbon dioxide concentration. FIG. 3 is a diagram illustrating an example of controlling the room temperature and carbon dioxide concentration from when the user starts sleeping to when the user wakes up in the first embodiment. FIG. 3 also shows the relationship between sleep depth, which indicates the depth of sleep of the user, and body movements. The height of the vertical line indicating the body movement indicates the magnitude of the body movement.

As shown in Figure 3, between the time a person starts sleeping and the time they wake up, the sleep depth shifts to deeper sleep in the order of 1, 2, 3, and 4; The sleep cycle of 3, 2, 1, and REM sleep is usually repeated every 90 minutes. During the first half of the day, when sleep is relatively deep, the body is relatively insensitive to external stimuli such as air currents and temperature and humidity. On the other hand, during the latter half of the day when sleep is relatively light, it is easier to react to external stimuli. Note that the deeper your sleep, the less your body movements.

A user's body movements are related to sleep. Therefore, by detecting the user's body movements, it is possible to detect, for example, sleep depth, sleep cycle, etc. as sleep state information. It is also possible to detect that the user has fallen asleep after going to bed.

In the present embodiment, the system control unit 100 controls the ventilation device 50 so that the carbon dioxide concentration of the user who has entered the room 23 at the time of going to bed is equal to or higher than the first concentration. Specifically, the system control unit 100 increases the carbon dioxide concentration to the first concentration by decreasing the ventilation amount by the ventilation device 50. The first concentration is, for example, 2000 ppm. By raising the carbon dioxide concentration in the room 23 to the first concentration, it is possible to make the user in the room 23 more likely to feel sleepy. According to the ventilation system according to the present embodiment, by increasing the carbon dioxide concentration at bedtime to the first concentration, it is possible to encourage the user to fall asleep.

At this time, the system control unit 100 controls the ventilation device 50 so that the carbon dioxide concentration when the user goes to bed is equal to or lower than the upper limit concentration. The upper limit concentration is, for example, 5000 ppm. Thereby, it is possible to encourage the user to fall asleep while avoiding adverse effects on the user's body.

The operation performed by the ventilation device 50 to increase the carbon dioxide concentration to the first concentration and reduce it to the upper limit concentration or less will also be referred to as a "first ventilation operation." Furthermore, the control executed by the system control unit 100 to cause the ventilation device 50 to perform this first ventilation operation will also be referred to as "first ventilation control."

In this embodiment, in addition to the first ventilation control, the system control unit 100 controls the ventilation device 50 so that the carbon dioxide concentration during sleep of the user after going to bed is equal to or lower than the second concentration. The second concentration is lower than the first concentration. Sleep time is a time point later than the time of going to bed, which is further later than the time of falling asleep. Specifically, the system control unit 100 reduces the carbon dioxide concentration during sleep to the second concentration by increasing the amount of ventilation by the ventilation device 50 compared to when sleeping. The second concentration is, for example, 1000 ppm. The operation performed by the ventilation device 50 to reduce the carbon dioxide concentration to the second concentration will also be referred to as a "second ventilation operation." Further, the control executed by the system control unit 100 to cause the ventilation device 50 to perform this second ventilation operation will also be referred to as "second ventilation control."

If the indoor carbon dioxide concentration is high when the user sleeps, the quality of the user's sleep will deteriorate. According to this embodiment, the quality of the user's sleep can be improved by lowering the carbon dioxide concentration through the second ventilation operation. Further, by lowering the carbon dioxide concentration after the user falls asleep, it is possible to quickly bring the user into a deep sleep state after falling asleep. According to this embodiment, the effect of promoting the user's sleep state to deep sleep can also be obtained.

As described above, the ventilation system according to the present embodiment includes the ventilation device 50 that can take outside air into the room 23, the indoor sensor unit 90 that detects the carbon dioxide concentration in the room 23, and the indoor sensor unit 90. A system control unit 100 that controls the ventilation device 50 according to the detected carbon dioxide concentration is provided. The system control unit 100 controls the carbon dioxide concentration of the user entering the room 23 at the time of going to bed to be equal to or higher than the first concentration and equal to or lower than the upper limit concentration. The first ventilation control and the second ventilation control are performed so that the second concentration is lower than or equal to the second concentration. Thereby, the first ventilation operation and the second ventilation operation described above are performed by the ventilation device 50. According to the ventilation system configured as described above, it is possible to encourage the user to fall asleep and to promote the user's sleep state to deep sleep. According to this embodiment, it is possible to provide a ventilation system that is advantageous for obtaining good quality sleep.

As shown in FIG. 3, the carbon dioxide concentration in the room from the time the user goes to bed until the time the user falls asleep may be maintained at a first concentration or higher and at or below an upper limit concentration. By maintaining a high carbon dioxide concentration from the time you go to bed until the time you fall asleep, you can more reliably promote falling asleep.

The second ventilation control described above is executed after the first ventilation control. That is, the second ventilation operation is performed after the first ventilation operation. As an example, the second ventilation operation may be performed after a certain period of time when the user goes to bed.

Moreover, in the embodiment shown in FIG. 3, the second ventilation operation is started when the user falls asleep. Specifically, the system control unit 100 executes the second ventilation control when the indoor sensor unit 90 detects that the user is falling asleep. As a result, the carbon dioxide concentration during sleep of the user after falling asleep becomes equal to or lower than the second concentration. By starting the second ventilation operation when the user falls asleep, it is possible to more reliably achieve both the effect of promoting sleep onset and the effect of promoting deep sleep.

Further, as shown in FIG. 3, the system control unit 100 may control the air conditioner 80 to lower the room temperature after the user enters the room 23 and before the user falls asleep. By lowering the room temperature toward the time of falling asleep, it is possible to more effectively encourage the user to fall asleep. The above operation of the air conditioner 80 that lowers the room temperature before going to sleep will also be referred to as a "first air conditioning operation." The control executed by the system control unit 100 to cause the air conditioner 80 to perform this first air conditioning operation will also be referred to as "first air conditioning control." The first air conditioning operation and the second air conditioning control are performed, for example, so that the temperature decrease width is about 2°C.

The first air conditioning operation may be started, for example, immediately after the user enters the room, or may be started a certain period of time after the user enters the room. In the embodiment shown in FIG. 3, the first air conditioning operation is started when the user goes to bed. Specifically, the system control unit 100 executes the first air conditioning control when the indoor sensor unit 90 detects that the user goes to bed. As a result, the room temperature starts to decrease from the time you go to bed. By starting the first air conditioning operation when the user falls asleep, the effect of promoting sleep can be more effectively achieved.

As shown in FIG. 3, the system control unit 100 may control the air conditioner 80 to increase the room temperature from when the user sleeps to when the user wakes up. By increasing the room temperature toward the time of waking up, it is possible to effectively encourage the user to wake up. The above operation of the air conditioner 80 to raise the room temperature before getting up will also be referred to as a "second air conditioning operation." The control executed by the system control unit 100 to cause the air conditioner 80 to perform this second air conditioning operation will also be referred to as "second air conditioning control."

The system control unit 100 uses the detection results of the outdoor sensor unit 91 to cause the ventilation device to control the indoor temperature so that the carbon dioxide concentration during the user's sleep is maintained at a second concentration or lower. good. That is, the first air conditioning operation that lowers the room temperature and the second air conditioning operation that increases the room temperature may be performed by the ventilation device 50.

Further, the system control unit 100 may control the temperature of the room 23 by linking the ventilation device 50 and the air conditioner 80. The first air conditioning operation and the second air conditioning operation may be performed by the ventilation device 50 and the air conditioner 80 working together. For example, when lowering the room temperature before falling asleep, if the outside temperature is lower than the room temperature, the amount of outside air taken in by the ventilation device 50 is increased. For example, when raising the room temperature before getting up, if the outside temperature is higher than the room temperature, the amount of outside air taken in by the ventilation device 50 is increased. This reduces the load on the air conditioner and reduces the energy consumption of the ventilation system.

The ventilation amount of the ventilation device 50 included in the ventilation system of this embodiment is controlled according to the carbon dioxide concentration detected by the indoor sensor unit 90. The ventilation amount of the ventilation device 50 may be controlled depending on the number of people present in the house 1, for example. The number of people present in the house 1 can be detected by, for example, a surface temperature sensor.

In this embodiment, the ventilation device 50 including the blower fan 52 is illustrated as a ventilation means, but the ventilation means in the present disclosure is not limited to having a fan. For example, the ventilation means may be configured to perform ventilation by opening and closing windows facing the outdoors using a device that automatically opens and closes windows facing the outdoors.

Further, the ventilation system according to the present disclosure only needs to have a configuration that can execute the first ventilation operation and the second ventilation operation in the above embodiments. The ventilation system according to the present disclosure may not include the air conditioner 80.

The ventilation device 50, which is an example of ventilation means, may be individually provided in each room to be ventilated. That is, the ventilation device main body 51 may be individually provided in each room to be ventilated. The ventilation device main body 51 may be installed in the ceiling of the bedroom 22, for example. Further, the ventilation device 50 may include a heat exchange element.

Moreover, FIG. 4 is a diagram showing a modification of the house 1 including a room to which the ventilation system according to the first embodiment is applied. The ventilation means and air conditioning means according to the present disclosure may be a whole building air conditioner 81 that performs temperature control and ventilation of the entire indoor space, as shown in a modified example of FIG. That is, the ventilation means and air conditioning means according to the present disclosure may be configured as one device such as the central air conditioner 81, or may be configured as separate devices such as the ventilation device 50 and the air conditioner 80. Good too.

Note that the ventilation system configured as described above can be applied to any building in which air supply vents are provided at multiple locations indoors, and is not limited to single-family homes. In addition to single-family homes, the present invention can also be applied to, for example, apartment complexes and accommodation facilities.

1 house, 10 first floor, 11 first floor room, 20 second floor, 21 second floor room, 22 bedroom, 23 indoors, 30 outside air intake, 41 ventilation fan, 42 range hood, 50 ventilation system, 51 ventilation system main body, 52 ventilation fan, 53 air purification section, 60 branch pipe, 61 branch section, 70 indoor air supply port, 71 indoor air supply amount adjustment section, 80 air conditioner, 81 whole building air conditioner, 90 indoor sensor unit, 91 outdoor sensor unit , 100 system control unit, 101 external network, 110 terminal device, 111 display unit, 112 operation unit, 200 home appliance

Claims (11)

Ventilation means that can bring outside air into the room,
carbon dioxide concentration detection means for detecting the carbon dioxide concentration in the room;
control means for controlling the ventilation means according to the carbon dioxide concentration detected by the carbon dioxide concentration detection means;
Equipped with
The control means is configured to control carbon dioxide concentration in the room when the user who has entered the room goes to bed so that the carbon dioxide concentration in the room is at least a first concentration and at most the upper limit concentration, and when the user sleeps after going to bed. The ventilation means is controlled so that the carbon dioxide concentration in the room is equal to or lower than a second concentration lower than the first concentration , and the carbon dioxide concentration in the room from the time the user goes to bed to the time he falls asleep is the same. A ventilation system that controls the ventilation means so that the concentration is maintained at a first concentration or more and at or below the upper limit concentration . comprising sleep onset detection means for detecting sleep onset of the user,
When the sleep onset of the user is detected by the sleep detection means, the control means controls the ventilation means so that the carbon dioxide concentration in the room during the user's sleep after falling asleep is equal to or lower than the second concentration. The ventilation system according to claim 1 , wherein the ventilation system controls: 3. The ventilation system according to claim 2 , wherein the sleep detection means includes an infrared sensor capable of detecting body movements of the user in a non-contact manner. Ventilation means that can bring outside air into the room,
carbon dioxide concentration detection means for detecting the carbon dioxide concentration in the room;
control means for controlling the ventilation means according to the carbon dioxide concentration detected by the carbon dioxide concentration detection means;
an air conditioning means for controlling the temperature in the room ;
Equipped with
The control means is configured to control carbon dioxide concentration in the room when the user who has entered the room goes to bed so that the carbon dioxide concentration in the room is at least a first concentration and at most the upper limit concentration, and when the user sleeps after going to bed. The ventilation means is controlled so that the carbon dioxide concentration in the room becomes a second concentration lower than the first concentration, and after the user enters the room and before the user falls asleep, the ventilation means is a ventilation system controlling said air conditioning means to reduce the temperature of the air; comprising an air conditioning means for controlling the temperature in the room,
4. The control means controls the air conditioning means to lower the temperature in the room after the user enters the room and before the user falls asleep. Ventilation system as described in. comprising a bedtime detection means for detecting when the user goes to bed,
The ventilation system according to claim 4 or 5, wherein the control means controls the air conditioning means to lower the indoor temperature when the bedtime detection means detects that the user goes to bed. . The ventilation system according to any one of claims 4 to 6, wherein the control means controls the air conditioning means to increase the temperature in the room from when the user sleeps to when he wakes up. Equipped with an outside temperature detection means to detect outside temperature,
The ventilation system according to any one of claims 4 to 7, wherein the control means controls the indoor temperature by interlocking the ventilation means and the air conditioning means. The ventilation system according to any one of claims 4 to 8, wherein the ventilation means and the air conditioning means are a central air conditioning system that controls and ventilates the entire indoor space. Ventilation means that can bring outside air into the room,
carbon dioxide concentration detection means for detecting the carbon dioxide concentration in the room;
control means for controlling the ventilation means according to the carbon dioxide concentration detected by the carbon dioxide concentration detection means;
Equipped with
The control means is configured to control carbon dioxide concentration in the room when the user who has entered the room goes to bed so that the carbon dioxide concentration in the room is at least a first concentration and at most the upper limit concentration, and when the user sleeps after going to bed. controlling the ventilation means so that the carbon dioxide concentration in the room is equal to or lower than a second concentration lower than the first concentration;
The ventilation means introduces outside air from one outside air introduction port, supplies the introduced outside air to a plurality of rooms provided indoors, and can individually change the amount of air supplied to each of the plurality of rooms. Ventilation system configured in. The ventilation means introduces outside air from one outside air introduction port, supplies the introduced outside air to a plurality of rooms provided indoors, and can individually change the amount of air supplied to each of the plurality of rooms. The ventilation system according to any one of claims 1 to 8, configured to.

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